﻿#region License, Terms and Conditions
//
// Copyright (c) 2008, aspZone.com
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//     * Neither the name of the <organization> nor the
//       names of its contributors may be used to endorse or promote products
//       derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY aspZone.com ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Author(s):
//  John Rudolf Lewis (http://aspZone.com)
//
#endregion

using System.Reflection;
using FluentNHibernate;
using NHibernate;
using NHibernate.Cfg;
using StructureMap;

namespace aspZone.Commerce.DataAccess
{
    public static class DataAccessConfiguration
    {
        private static Configuration nHibernateConfiguration;
        private static bool hasBeenInitialized = false;

        static DataAccessConfiguration()
        {
            nHibernateConfiguration = new Configuration();
            nHibernateConfiguration.SetProperty("connection.driver_class", "NHibernate.Driver.MySqlDataDriver");
            nHibernateConfiguration.SetProperty("connection.connection_string", System.Configuration.ConfigurationManager.ConnectionStrings["CommerceDataConnection"].ConnectionString);
            nHibernateConfiguration.SetProperty("dialect", "NHibernate.Dialect.MySQLDialect");
            nHibernateConfiguration.SetProperty("show_sql", "true");
            nHibernateConfiguration.SetProperty("query.substitutions", "true 1, false 0, yes 1, no 0");

            var models = new PersistenceModel();
            models.Conventions.GetPrimaryKeyNameFromType = type => type.Name + "Id";
            models.Conventions.GetForeignKeyName = prop => prop.Name + "Id";
            models.Conventions.GetForeignKeyNameOfParent = type => type.Name + "Id";
            models.Conventions.GetManyToManyTableName = ((child, parent) => string.Compare(child.Name, parent.Name) < 0 ? child.Name + parent.Name : parent.Name + child.Name);
            models.addMappingsFromAssembly(Assembly.GetExecutingAssembly());
            
            models.Configure(nHibernateConfiguration);
        }

        /// <summary>
        /// Gets the NHibernate Configuration.
        /// </summary>
        public static Configuration NHibernateConfiguration
        {
            get
            {
                return nHibernateConfiguration;
            }
        }

        /// <summary>
        /// Gets the current session if one exists in either HTTPContext or ThreadLocalStorage, otherwise opens a new one.
        /// </summary>
        /// <returns>an NHibernate.ISession</returns>
        public static ISession GetSession()
        {
            if (!hasBeenInitialized)
            {
                ObjectFactory.Initialize(x =>
                {
                    x.AddRegistry(new DataAccessRegistry());
                });
            }
            return ObjectFactory.GetInstance<ISession>();
        }

        internal static bool HasBeenInitialized
        {
            get
            {
                return hasBeenInitialized;
            }
            set
            {
                hasBeenInitialized = value;
            }
        }
    }
}
